Path: utzoo!news-server.csri.toronto.edu!cs.utexas.edu!usc!wuarchive!m.cs.uiuc.edu!ernie!bazyar
From: bazyar@ernie (Jawaid Bazyar)
Newsgroups: comp.sys.apple2
Subject: Re: Much about Quantums and SCSI and troubles..
Message-ID: <1991Mar15.012713.24808@m.cs.uiuc.edu>
Date: 15 Mar 91 01:27:13 GMT
References: <9103142212.AA07966@beaver.cs.washington.edu>
Sender: news@m.cs.uiuc.edu (News Database (admin-Mike Schwager))
Reply-To: bazyar@cs.uiuc.edu (Jawaid Bazyar)
Organization: Mutation Testing Facility, University of Illinois
Lines: 33

In article <9103142212.AA07966@beaver.cs.washington.edu> davewh@microsoft.UUCP writes:
>
>There has been talk here of problems with Quantums.
>
>First, the prodrives don't do low-level formats - they're already
>formatted at 1-1 interleave and they have a disk-cache built onto the
>controller (I think it's 32k big). Anyway, one doens't need to do
>low-level formats on Quantum Prodrives. If you try, it comes right
>back instantly saying "Success."

  Not exactly- I low-level formatted my Quantum with my RamFast, it
took about 30 seconds.  I've heard here before that the Quantums just
ignore the interleave, always using 1:1. 
  Also, I think the Quantum (my new 40meg anyway) has a 64k cache.

>Next, someone used the term "supplying terminating power to the bus."
   The RamFast manual uses that term.  It's somewhat confusing.

>Quantum drives are generic SCSI drives. I have an 80meg prodrive
>hooked to my Rev C card - no problems. I bought the thing from some
>mail order place with an ad in the back of macweek - best prices
>around. Anyone who tells you quantum drives don't work on a // is full
>of it - Apple brand drives are Quantum mechanisms!

   I agree.  Check out Aurora Industries- $235 for a 40meg ProDrive,
12ms access (with cache).  They also have factory refurbished drives
for incredibly low prices, and a 6 mo warranty.

--
Jawaid Bazyar               |"I'm sure K&R have never heard of Mike." 
Senior/Computer Engineering |
bazyar@cs.uiuc.edu          |"That's okay. I'm sure Mike's never heard of K&R".
   Apple II Forever!        |  (discussion about Orca/C)